– Discussion: – known as carpus curves, is result of epiphyseal arrest on ulnar & volar half of the distal radius, which causes articular surface to be directed ulnarward and volarward; – genetics: it is inhertited as autosomal dominant trait w/ variable expressivity; – females are affected four … Read more
– See: Triquetrium – Lunotriquetral Dissociation: – ulnar side carpal instability; – involves disruption of lunotriquetral & volar radiolunotriquetral ligaments & attentuation or rupture of dorsal radiotriquetral attachments; – w/ a isolated tear of the LT interosseous ligament, there will be only a small amount of increased motion, however, … Read more
– See: – Bunnel Test for Intrinsic Tightness: – Lumbricals: – Discussion: – this is manifested by intrinsic plus attitude in involved finger on attempted flexion: (w/ MP flexion there will be IP extension); – FDP becomes an extensor of the PIP joint; – when FDP relaxes FDS can … Read more
– See: – Bunnel Test for Intrinsic Tightness: – Extensor Mechanism of Digits – Lumbrical Muscle Sheaths – Lumbical Plus Finger: – Origin: – tendons of FDP tendon in center of palm, just proximal to the flexor sheath and the A1 … Read more
– Discussion: – lunate shaped spacer implant made of silicone, vitallium, acrylic, or rolled-tendon is inserted into theresulting space to prevent migration of other carpal bones; – due to the high rate of synovitis, most surgeons are now reluctant to use lunate implants; – Technical Considerations: – dorsal approach is … Read more
– Discussion: – spinal stensosis is a narrowing of the lumbar spinal canal and/or neural foramina; – results in compression of the cauda equina and lumbar nerve roots, producing neural root ischemia and neurogenic claudication; – compression of neural structures also compresses vascular supply of nerves so that symptoms are predominately those of … Read more
– Discussion: – index lumbrical is adherent to roof of thenar bursa; – second, third, & 4th lumbrical sheaths are not so easily demonstrated, but when present usually overlie mid palmar bursa or space; – lumbar sheaths extend from the web area to the center of the palm; … Read more
– See: – Claw Hand: – Tendon Excursion: – Nerve Repair: – Combined Injuries of the Median and Ulnar Nerves: – Discussion: – lesion of ulnar nerve at or near wrist or base of palm will result in paralysis of hypothenar … Read more
– longitudinal tears, which usually involve the posterior portion of the meniscus, are the most common meniscal lesions; – in many cases, gross inspection reveals only slight irregularities in inner border of the meniscus; – probing is necessary to establish the presence of a tear; – the meniscus should be probed from its … Read more